Philsener has got it, from all the searching I've been doing if your on a 3GS an 5.14.02 and ios4.1 you DO NOT have to update to 4.2.1 because it is currently a tethered boot, if your on 4.1 just get the iPad firmware and update the bb on your phone via new redsnow(not yet released) or pwnagetool(Mac) hope that clears up a bit

when redsnow is available, there will be a message on the dev-team-blog -> Dev-Team Blog

i am unsure, but it doesnt feel good to upgrade the bb to an i-pad version! no way to downgrade to a newer iphone bb after that... and did i get it right, i cant even install a newer firmware like ios 4.3 or something, beacuse it wont know the 6.15 bb?

Philsener has got it, from all the searching I've been doing if your on a 3GS an 5.14.02 and ios4.1 you DO NOT have to update to 4.2.1 because it is currently a tethered boot, if your on 4.1 just get the iPad firmware and update the bb on your phone via new redsnow(not yet released) or pwnagetool(Mac) hope that clears up a bit

According to the Dev Team Blog, if you have a 3GS with an OLD bootrom, you should update to stock 4.2.1, then upgrade the Baseband to the 06.15 version included with the iPad's 3.2.2 release. Then you can use redsn0w to upgrade to that baseband and unlock it!

Boy that makes me nervous. Need to keep reading the comments - I have 2 3GSs with old bootroms, and I want to make sure I get this right.